ALEXANDRIA, Va., June 2 -- United States Patent no. 12,647,275, issued on June 2, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"Aggregate anonymous credentials for decentralized identity in blockchain" was invented by Kaoutar El Khiyaoui (Zurich), Angelo De Caro (Zurich, Switzerland) and Elli Androulaki (Zurich, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system may prove one or more attributes of a user by generating cyclic groups, generating an aggregate anonymous credential by a regulatory authority and issuers of the system, setting up an issuer with a multi-signature of administrators of the system, generating user credentials, and validating an operation signed...